1958 D Cent with odd coloring

Sony

Hi, I am reposting to try and see if I can download my photos. I have a 1958D penny with an odd pattern. Acetone did not effect the pattern. It is on both sides, but more visual on the obverse. Curious if it is just staining of some sort, or perhaps I am just seeing things. It is "flat," into the coin, with no ridges or bumps. Thanks.
https://drive.google.com/file/d/1n4JuOMgCnsCZKrvaUBoKaN1ZPc0LZy78/view?usp=sharing
https://drive.google.com/file/d/1YsbQSWKudsLxzjCMdgnt8wHAbvBkIdo6/view?usp=sharing
https://drive.google.com/file/d/1Z8CihSZazsvXpNmrLMja-iMCMkd28L4N/view?usp=sharing

Oldhoopster

Staining of the copper. Not an error of any kind